Oxygen Isotopes in Different Recession Subregimes of Karst Springs in the Brezovské Karpaty Mts. (Slovakia)

Malík, Peter; Michalko, Juraj

doi:10.3986/ac.v39i2.99

Cited by 6 publications

(3 citation statements)

References 24 publications

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“…range, one can say that the magnitude of the determined isotopic 'altitude' effect tends to be smaller than the δ 18 O vertical gradient calculated to the south of the study area, e.g., near Zagreb (−2.8‰/km) [46] or in the northern Adriatic (−3.0‰/km) [47]. However, at the northern border of the study area, in the Western Carpathians, the 'altitude' effect estimated both from spring water δ 18 O values (−1.0 to −1.5‰/km) [48] and from precipitation δ 18 O values (−2.1‰/km) [49] is relatively closer to the empirical δ 18 O lapse rate obtained here for modern precipitation. At the eastern border of the study area, in the Eastern Carpathians, the estimated long-term 'altitude' effect based on spring water δ 18 O values also returned comparable results (−1.5‰/km [50]).…”

Section: 'Altitude' Effectmentioning

confidence: 88%

Isotopic ‘Altitude’ and ‘Continental’ Effects in Modern Precipitation across the Adriatic–Pannonian Region

Kern

Hatvani

Czuppon

et al. 2020

Water

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It is generally observed that precipitation is gradually depleted in 18O and 2H isotopes as elevation increases (‘altitude’ effect) or when moving inland from seacoasts (‘continental’ effect); the regionally accurate estimation of these large-scale effects is important in isotope hydrological or paleoclimatological applications. Nevertheless, seasonal and spatial differences should be considered. Stable isotope composition of monthly precipitation fallen between January 2016 and December 2018 was studied for selected stations situated along an elevation transect and a continental transect in order to assess the isotopic ‘altitude’ and ‘continental’ effects in modern precipitation across the Adriatic–Pannonian region. Isotopic characteristics argue that the main driver of the apparent vertical depletion of precipitation in heavy stable isotopes is different in summer (raindrop evaporation) and winter (condensation), although, there is no significant difference in the resulting ‘altitude’ effect. Specifically, an ‘altitude’ effect of −1.2‰/km for δ18O and −7.9‰/km for δ2H can be used in modern precipitation across the Adriatic–Pannonian region. Isotopic characteristics of monthly precipitation showed seasonally different patterns and suggest different isotope hydrometeorological regimes along the continental transect. While no significant decrease was found in δ18O data moving inland from the Adriatic from May to August of the year, a clear decreasing trend was found in precipitation fallen during the colder season of the year (October to March) up to a break at ~400 km inland from the Adriatic coast. The estimated mean isotopic ‘continental’ effect for the colder season precipitation is −2.4‰/100 km in δ18O and −20‰/100 km in δ2H. A prevailing influence of the Mediterranean moisture in the colder season is detected up to this breakpoint, while the break in the δ18O data probably reflects the mixture of moisture sources with different isotopic characteristics. A sharp drop in the d-excess (>3‰) at the break in precipitation δ18O trend likely indicates a sudden switch from the Mediterranean moisture domain to additional (mainly Atlantic) influence, while a gradual change in the d-excess values might suggest a gradual increase of the non-Mediterranean moisture contribution along the transect.

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Section: 'Altitude' Effectmentioning

confidence: 88%

Isotopic ‘Altitude’ and ‘Continental’ Effects in Modern Precipitation across the Adriatic–Pannonian Region

Kern

Hatvani

Czuppon

et al. 2020

Water

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“…Later studies (e.g. Kullman 1983Kullman , 1990Kullman , 2000Bonacci 1993;Tallaksen 1995;Malík and Michalko 2010;Malík and Vojtková 2012;Malík 2015) describe the presence of more than two flow components in recessional hydrographs. Recession hydrograph analysis was applied also on nonkarstic aquifers (Dewandel et al 2003;Lo Russo et al 2015), but the majority of papers on hydrograph analysis in hydrogeology were exclusively devoted to karstic groundwater, e.g.…”

Section: Introductionmentioning

confidence: 99%

“…A technique of hydrograph separation into individual flow components based on parameters of the MRC, as a superposition of individual flow components determined just by time value theoretically elapsed from the overall discharge maxima, was presented by Malík (2010Malík ( , 2015. Based on this method, Malík and Michalko (2010) recognized the different isotope compositions of individual flow components. Malík and Vojtková (2012) performed recession analyses on coupled discharges of two pairs of neighbouring springs to examine their possible linking to one "multiple" spring (as baseflow and/or overflow branch output from the system).…”

Section: Introductionmentioning

confidence: 99%

Esquemas de recesión de la descarga de los manantiales kársticos observados en los acuíferos de carbonatos del Triásico de Eslovaquia

et al. 2021

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Master recession curves of 117 karstic springs from Middle and Upper Triassic carbonate aquifers in the Slovakian territory of the mountainous Western Carpathians were assembled from gauged discharge data. Identified slow-flow and fast-flow components were very diversely represented. Fast-flow components were missing in 47% of springs. In another 20% of springs, only fast-flow components were recognized, while slow-flow components were absent. Simultaneous discharge of both slow-flow and fast-flow components was found at 39 springs (33%). Known geology of recharge areas enabled examination of the impact that outcropping dolomites and/or limestones may pose to the discharge recession. It was found that dolomites in springsheds significantly affect slow-flow components, but do not influence the occurrence of the fast-flow ones. The purely fast-flow-driven recession was present both in limestone and dolomitic springsheds, but merely one fast-flow component was typical for the dolomitic ones. Two or three fast-flow components may appear in "purely limestone" springsheds. Recession coefficients of slow-flow components were within the interval of 0.0004-0.18 days −1 and those of fast-flow within 0.0017-0.31 days −1 . The duration of the fast-flow components is mostly several days or several tens of days, while the theoretical duration of slow-flow may last for decades. Storage in matrix, fractures or conduits of the saturated zone cannot be separately estimated because, in discharged volumes, water from unsaturated and epikarst zones is included. Variable shapes of assembled master recession curves point to the important influence of unsaturated and epikarst zones on the discharge recessional patterns of karst springs.

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Comparison of Mine Drainage/Karst Springs Discharge Recession Curves

Malík

Bajtoš

2017

EuroKarst 2016, Neuchâtel

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Oxygen Isotopes in Different Recession Subregimes of Karst Springs in the Brezovské Karpaty Mts. (Slovakia)

Cited by 6 publications

References 24 publications

Isotopic ‘Altitude’ and ‘Continental’ Effects in Modern Precipitation across the Adriatic–Pannonian Region

Isotopic ‘Altitude’ and ‘Continental’ Effects in Modern Precipitation across the Adriatic–Pannonian Region

Esquemas de recesión de la descarga de los manantiales kársticos observados en los acuíferos de carbonatos del Triásico de Eslovaquia

Comparison of Mine Drainage/Karst Springs Discharge Recession Curves

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